29688752857 has 4 divisors (see below), whose sum is σ = 29976993280. Its totient is φ = 29400512436.

The previous prime is 29688752851. The next prime is 29688752867. The reversal of 29688752857 is 75825788692.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 29688752857 - 2⁷ = 29688752729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 29688752792 and 29688752801.

It is not an unprimeable number, because it can be changed into a prime (29688752851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144120057 + ... + 144120262.

It is an arithmetic number, because the mean of its divisors is an integer number (7494248320).

Almost surely, 2^29688752857 is an apocalyptic number.

It is an amenable number.

29688752857 is a deficient number, since it is larger than the sum of its proper divisors (288240423).

29688752857 is a wasteful number, since it uses less digits than its factorization.

29688752857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288240422.

The product of its digits is 135475200, while the sum is 67.

The spelling of 29688752857 in words is "twenty-nine billion, six hundred eighty-eight million, seven hundred fifty-two thousand, eight hundred fifty-seven".